Hi, I am 14 years old...and i am definetly a hypochodriac(if you haven't looked at my username already) I am extremely worried about having a brain tumour...here are my symptoms:

-Nausea then a hiccup and it goes away

-Loss of sensation(no tingling) all over my body

-weakness all over my body

-random(kind of like throbbing) 1 second headaches when i move too fast

-i have lately been feeling strange cold,wet feeling in both of my ears

-extreme fatigue

I have been having these symptoms for 3 weeks now...
I have also been to Urgent Care 3 times with these symptoms...
The doctors made me take a neurological exam(Balace test,coordination test and they looked in my eyes)
They said everything was fine...but i'm still worried because they won't let me have an M.R.I. done...i am sure if an M.R.I. tells me i don't have a brain tumor i would completely forget about everything...

please answer ASAP...